WARNING
must be
A regulator (which complies with EN16129:2013 is needed)
of the correct pressure corresponding to the appliance category.
Use 30mbar regulator for butane/propane under the category I3B/P(30).
Use 30mbar regulator for butane under the category I3+(28-30/37).
Use 37mbar regulator for propane under the category I3+(28-30/37).
Use 50mbar regulator for butane/propane under the category I3B/P(50).
It's recommended to use flexible hose that is approved under EN16436:2014.
-3-